My intention is to convey that the mapping was a default mapping, not that the names were defaulted.
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WilliamKFFeb 10 '11 at 18:31

1

@WilliamKF: Then you would have to write it differently to make that clear. The word default isn't widely used as an adverb, and it would take the form defaultly or defaultedly in that case. Perhaps "names mapped explicitly or by default" would be usable.
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GuffaFeb 10 '11 at 19:16

Hmm, the use of 'explicitly' in your sentence seems a bit awkward to me, plus I still don't think it quite has the correct meaning. How does my suggested answer read to you?
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WilliamKFFeb 10 '11 at 18:55

The separate answer (not the one at the end of your question) does sound much better.
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AlexFeb 10 '11 at 19:18